A method may include establishing a virtual connection across a plurality of different channels connecting a first computing device to a plurality of second computing devices, with individual channels including a plurality of different data streams, the second computing devices providing access to a communications network, and the virtual connection for communicating data through the second computing devices over the network. The method may also include switching the data streams between the different channels responsive to levels of service available and without interrupting the virtual connection. Further, the first and second computing devices may be configured to provide software-defined networking in a wide area network.